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Prove that tan 56^@ = (cos11^@ + sin...

Prove that `tan 56^@ = (cos11^@ + sin11^@)/(cos11^@ - sin11^@) `

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LHS `=(cos11^(@)+sin11^(@))/(cos11^(@)-sin11^(@))`
`=(1+tan11^(@))/(1-tan11^(@))`(Divide `N^(r )` and `D^(r ) "by" cos x)`
`=(tan45^(@)+tan11^(@))/(1-tan45^(@)tan11^(@))`
`=tan(45^(@)+11^(@))=tan56^(@)`
`tan(90-34^(@))=cot34^(@)=`RHS Hence Proved.
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